line segment -- a direct line between two points.
link -- a topological connection between two nodes. A link may be directed by ordering its nodes.
Line segment
Affine function
Diffraction
Glossary of Riemannian and metric geometry#R for its meaning in Riemannian geometry.
Incidence (geometry)
Minimal line representation ...
Line segments that appear to be of very different lengths to our Euclidean eyes may be of the same length when we wear hyperbolic glasses and vice-versa.
The original line segment is on the left. The green vertices (endpoints) define it.
Then in the black window you should see spectral curves (as straight line segments) for all 8 classes you set up, each with the color assigned to it.
Each line segment is drawn in colors c1 and c2. A mouse button menu indicates that the user can find out the geographic coordinates of the cursor location, draw line segments between user-specified vertices, and quit d.measure.
In the above discussion, you could substitute the words "line segment" for "cell" and not be too far off. First, you locate a starting location on a network of lines. The location might be a fire station on a particular street in your town.
The simplest method for scan converting (rasterizing) a Bézier curve is to evaluate it at many closely spaced points and scan convert the approximating sequence of line segments.
The FCC M3 files, covering Canada, the United States, and Mexico are topologically organized, with conductivities defined for the west and east sides of the line segments. The WHEM files, used in this case study, cover the entire Western Hemisphere.
First, a route system is created by associating adjacent line segments into one or more groups that have a definite linear sequence.
In digitizing a lake, for example, the shoreline can be indicated as a series of points and line segments.
systems rely on one of three basic overall systems design alternatives: 1) street span systems (consists of address range records in which the beginning and ending intersection points describe a street span), 2) street/line segment systems (consists ...
Even when the objects are line segments, the Voronoi cells are not bounded by straight lines. The medial axis is used in image segmentation, optical character recognition and other computational applications.
The TIGER 1-Cell Source Code (SOURCEID) in Record Type M identifies the source for each line segment and provides the link between the TIGER/Line files and the source and horizontal spatial accuracy information in the county based metadata.
A spherical triangle is formed when arcs of three different great circles meet in pairs (just as a triangle in the plane is formed by three mutually intersecting straight line segments).
recode the sequence of line segments that connect to form the boundary (i.e. rebuild topology)
assign new ID #'s to each new object
Forestry example
consider a forestry GIS where the forest is divided into "stands", average size 10 ha: ...
Route - Routes usually define specific paths along a line segment or multiple line segments. For example, the portion(s) of a street that are traversed in order to get from location "A" to location "B" including the direction traveled.
When your GIS system finds the line segment with the right name and address ranges it will place a point. Point placement is based on where the address number falls in the address range.
Common Problems ...
Wireframe: A graphical representation of a two-dimensional or three-dimensional solid or surface by means of regularly-spaced, connected line segments. The wireframe surface looks as if it had been molded by a flexible wire mesh.
The water main segments, the valves and the fire hydrants have been placed together in one layer as line segments, and two sets of nodes. However, each entity has its own relational table to record its respective attributes (see Table 1).
Figure 3 shows that closed polygons are created from vectorized line segments.
Figure 4 shows that boundary lines are traced directly from a classified SPOT image. Different color regions are traced and put into separate map layers.
Move the pointer over Seattle, and click the mouse button. This starts a line segment. Notice the status bar in the measurement window reports the distance of the current segment as well as the total length of the line.
Poly Line - a shape defined by a series of connected line segments
Polygon - a closed shape defined by a connected sequence of x,y coordinate pairs, where the first and last coordinate pair are the same and all other pairs are unique ...
STRING
A sequence of line segments or text items. It does not have topological properties.
In GIS, an enclosed area defined by three or more line segments.
Port
A hardware interface used by a computer to communicate with an external device.
Click and hold the mouse as you drag a line segment from the Himalaya Hotel toward Pashupati Nath following the main roads and avoiding water bodies. Release the mouse button at the end of each segment. Follow the path as shown below.
The Hewlett-Packard Graphics Language (HPGL) is a page description language designed for use with plotters and printers. Each line of the file contains one move command, so a line segment connects two successive lines or points.
of any world map are represented at least twice, since in the original sphere the "edges" are joined (an unrelated phenomenon occurs in cylindrical and other flat-polar projections like Eckert's and mine, which stretch the poles into line segments).
When an adjustment is performed, the individual corrections/adjustments made to each baseline (so-called residual errors) provide an accuracy assessment for each baseline segment.
A TIN is a vector topological network of triangular facets generated by joining the irregular points with straight line segments. The TIN structure is utilized when irregular data is available, predominantly in vector based systems.
The increase in detail is, of course, limited to the information contained in the file: enlarging a curve it may eventually become a series of straight line segments, or other standard geometric figures such as arcs of circles.
For example, in g1 , one might have a table containing point objects representing the fire stations in the geographical area covered by the spatial database g1 , a second table containing line segments representing the road network of the same area, ...
More than 7 years and $200 million dollars were required to complete the TIGER files. The complete TIGER files for the entire U.S. contain nearly 40,000,000 line segments and require more than 15, ...
For example, an address point of 500 will be at the midpoint of a line segment that starts with address 1 and ends with address 1000. Geocoding can also be applied against actual parcel data, typically from municipal tax maps.
Census Bureau produced Geographic Base Files (GBF) and Dual Independent Map Encoding (DIME) files, containing census geographic statistical codes and coordinates of line segments for most metropolitan areas.
34 a directed set of non-intersecting line segments with nodes at each end and reference to left and right polygons. choropleth framework p.
Injection Disposal from Oil/Gas Well An Injection/disposal well that was previously classified as an oil and gas producer. Interstate (Pipeline Attribute) Identifies if a pipeline segment is Interstate or Intrastate.
Polyline: A line made up of a sequence of line segments.
Query: A statement expressing a set of conditions that forms the basis for the retrieval of information from a database.
 See also: Area, Information, GIS, Map, Model
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